developed a distinct identity. The territory diverged from the mainland through its long period of colonial administration and a different pace of economic, social, and cultural development. Mainstream culture is derived from immigrants originating from various parts of China. This was influenced by British-style education, a separate political system, and the territory's rapid development during the late 20th century. Most migrants of that era fled poverty and war, reflected in the prevailing attitude toward wealth; Hongkongers tend to link self-image and decision-making to material benefits. Residents' sense of local identity has markedly increased post-handover: The majority of the population (52%) identifies as "Hongkongers", while 11% describe themselves as "Chinese". The remaining population purport mixed identities, 23% as "Hongkonger in China" and 12% as "Chinese in Hong Kong". Traditional Chinese family values, including family honour, filial piety, and a preference for sons, are prevalent. Nuclear families are the most common households, although multi-generational and extended families are not unusual. In British-ruled Hong Kong, polygamy was legal until 1971 pursuant to the colonial practice of not interfering in local customs that British authorities viewed as relatively harmless to the public order. Spiritual concepts such as feng shui are observed; large-scale construction projects often hire consultants to ensure proper building positioning and layout. The degree of its adherence to feng shui is believed to determine the success of a business. Bagua mirrors are regularly used to deflect evil spirits, and buildings often lack floor numbers with a 4; the number has a similar sound to the word for "die" in Cantonese. Besides, the cultural integration can also be found in everyday life in Hong Kong. For example, British English is a common second language and also one of the official languages in British Hong Kong since the establishment of the colony. Moreover, British English is also taught in primary and secondary schools. For the metro system, the metro lines are named after places instead of numbered, unlike Mainland China, where metro lines are numbered. Roads were named after British royals, governors, famous people, cities and towns across the UK and the Commonwealth, as well as Chinese cities and places. Aside from Chinese New Year, Christmas is celebrated as the second-most important festival. In literature, some idioms in Cantonese are directly translated from those in English. A Mandarin Chinese speaker may recognise the words but not understand the meaning. Cuisine Food in Hong Kong